Program: GN-2021B-FT-118

Accretion disks around young stellar objects play an important role in the star formation process. The accretion mechanism from a disk to a central star is still in debate, and episodic accretion bursts are believed to be crucial in the growth of the star and the evolution of the disk. FU Orionis-type objects (FUors) are well-studied evidence of episodic accretion because of their sudden brightness increase. V733 Cep is a unique bonafide FUor that currently shows a sudden decrease in brightness, probably signaling the end of its accretion outburst. To capture the first post-outburst moment of a bonafide FUor and investigate the physical mechanisms that cause the decrease of accretion rate, we propose optical/near-infrared spectroscopic and near-infrared imaging observations of V733 Cep with GMOS-N, GNIRS, and NIRI at the Gemini-North telescope.